Click any block to mark it as placed
Building a perfect circle in Minecraft is one of the most common challenges for builders. Because Minecraft uses a block based grid, true curves don't exist. Instead, you approximate them using a technique called pixel art circles or voxel circles.
The trick is to follow a mathematical pattern where each row of blocks is offset slightly from the previous one. The Blocksmith Circle Generator calculates this pattern automatically for any diameter you choose, from tiny 5-block circles to massive 200-block rings.
Tips for building circles:
.schem to paste directly into your world with WorldEdit or LitematicaA Minecraft sphere is built layer by layer. Each horizontal slice of the sphere is a circle with a different radius, largest at the equator and smallest at the top and bottom. The Blocksmith Sphere Generator shows you exactly which blocks to place on each layer.
Use the layer slider to move through each cross-section of the sphere from bottom to top. The 3D viewer lets you rotate, pan and zoom to visualise the full shape before you start building.
Tips for building spheres:
.schem and use a paste tool. Building manually takes hoursNot every build needs a perfect circle. The Oval Generator lets you set independent width and height values to create stretched or compressed ellipses, perfect for race tracks, swimming pools, stadium designs and natural-looking terrain.
The Arc Generator creates partial circles and curved walls. Set the start and end angle to get exactly the curve you need. Arcs are ideal for curved bridges, amphitheatres, curved roads and decorative architectural details.
Common uses:
.schem exportThe Pixel Art tool lets you upload any image and convert it into a Minecraft block layout automatically. The tool analyses each pixel and finds the closest matching Minecraft block colour from a palette of 162 blocks including concrete, wool, terracotta, glazed terracotta, and more.
You can also paint pixel art manually using the brush and fill tools. Set any custom width and height up to 256×256 blocks, choose your palette, and export the finished design as a .schem file ready to paste into your world.
Tips for pixel art:
A .schem file (schematic) is a file format used by Minecraft building tools like WorldEdit, Litematica, and Axiom. Download the schematic from Blocksmith Tools, place it in your tool's schematics folder, and paste it into your world at any position. This saves hours of manual block by block building.
The circle, oval, sphere and arc generators work identically for both Java and Bedrock editions. The block patterns are the same. The .schem export format is designed for Java Edition tools. Bedrock players can still use the visual guides to build manually.
For decorative builds, diameters between 15 and 30 blocks look great and are manageable to build. Go bigger and the results get even better. Just export as a .schem and paste it in with WorldEdit, Litematica or Axiom. There is no limit on what you can build.
Minecraft uses a cubic block grid, so true curves are impossible. What we call a "Minecraft circle" is the closest possible approximation using whole blocks, similar to how old pixel art represents curves on a screen. The generator uses the midpoint circle algorithm to produce the most accurate approximation possible at any given diameter.
Yes, completely free, no account required, no downloads. All tools run directly in your browser. The only optional feature is the .schem export which also costs nothing.